Without wishing to overly complicate things, it would be great if the Contacts app were "plugin based" so that when e.g., Lauren's Contact is selected, things like "Call Lauren Mobile", "SMS Lauren" (which are obvious, and known in advance) could be supplemented by "Find Lauren in the WizzyNewApp" (which are not) can be added by the WizzyNewApp without needing to e.g., modify and recompile the Contact App.